The bird flu-suspect poultry farm owner in Bangladesh's western Rajshahi district and his wife and son, who were quarantined on suspicion of avian influenza infection, were released from hospital Sunday after pathological tests in the capital produced negative results.
The tests of throat and nasal swabs of the farm owner Ashraf Hossain, 42, and his wife and 14-year-old son were carried out at the virology departments of Institute of Epidemiology, Disease Control and Research (IEDCR) and the ICDDR, B (International Cent for Diarrhea Disease Research, Bangladesh).
"We recommended releasing the three after extensive tests. We first performed a rapid test for influenza at the virology department of IEDCR and the results were negative for all three," Prof Mahmudur Rahman, director of IEDCR, was quoted by leading English newspaper The Daily Star as saying on Monday.
"Usually, we do not proceed for further tests after the rapid test. But since it was the first case in the country where the patient was from an infected farm, we gave it a top priority," he said.
The specimens were then sent to the virology department of ICDDR, B for real-time polymerase chain reaction (RT-PCR) test and the results were negative for H5 virus too.
Ashraf Hossain, a poultry farmer in the Rajshahi city, about 205 km northwest of Dhaka, had been taken to Rajshahi Medical College Hospital on March 5 and quarantined the next day on suspicion of being infected with the avian influenza H5N1 virus.
On Feb. 20 this year, some 100 chickens of his farm died and he buried those without taking any protective measures. Two days later, the district livestock department confirmed the presence of bird flu virus at the farm and culled 600 chickens.
Source: Xinhua
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